The concept of demographic transition provides a model for

The concept of demographic transition provides a model for

analyzing government responses to changing pattern of population growth
explaining major patterns of global population movement throughout the history
analyzing spatial variations in the distribution, growth and movement of population over time
examining the relationship between economic development and natural population change
This question was previously asked in
UPSC NDA-1 – 2015
The Demographic Transition Model (DTM) describes the historical shift in birth rates and death rates as a country or region develops from a pre-industrial to an industrialized economic system. It typically outlines four or five stages showing how changes in economic development are associated with changes in natural population change (births minus deaths). It does not primarily focus on government responses, population movement (migration), or spatial variations, although these can be related. Its core purpose is to explain the link between development and population growth patterns.
The Demographic Transition Model explains how population growth rates change as societies undergo economic development, specifically linking birth and death rates to modernization.
The DTM proposes that countries pass through stages: Stage 1 (High birth and death rates, low growth), Stage 2 (Falling death rates, high birth rates, rapid growth), Stage 3 (Falling birth rates, slowing growth), Stage 4 (Low birth and death rates, stable or slow growth), and sometimes Stage 5 (Birth rate below death rate, population decline).
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